Printer&#39;s quoin.



PATENTED JULY 11, 1905.

L. L. ROGERS.

' PRIN-TERS QUOIN.

APPLICATION FILED MAR. 22, 1905.

Illllln unlll J 70 If "H 2 7f Witness 6 UNITED STATES Patented July 11,1905.

PATENT OEEIcE.

PRINTERS QUOIN.

SPECIFICATION forming part of Letters Patent No. 794,188, dated July 11,1905.

I Application filed March 22, 1905. Serial No. 251,386.

,fulimprovements in printers quoins of that character or type whichembody in their construction Wedge-shaped sections or parts arranged incontact with each other on their inclined faces and having theiropposite faces parallel and adapted to engage, respectively, with thetype-form and the chase, said sections being longitudinally movable uponeach other to increase the distance between said opposite faces, so asto exert a clamping or wedging action to maintain the type-formimmovablyin position within the chase.

' The primary object of the invention is to provide a quoin of thegeneral character mentioned with improved and simplified locking meansto prevent the sections from becoming accidentally loosened anddislodged from wedging position after they have been adjusted to lockthe form in the chase.

I would state that I am aware that the prior art disclosespivotally-supported and springactuated pawls, detents, similarlyactuatedcam-locking devices, and also slidingly-disposed latches carried by oneof the quoin-sections adapted to engage aserrated or notched surface onthe opposite section of the quoin; and it is therefore a further objectof my invention to simplify the existing art by dispensing with allauxiliary means for effecting theengagement of the locking-piece withthe serrated surface and also to provide an improved bearing or housingfor the lockingpiece which will obviate the use of pivot-pins, shafts,and similar mountings.

The invention consists in the peculiar construction and arrangement ofparts, to be more fully described hereinafter, and the novelty of whichwill be particularly pointed out and distinctly claimed.

I have fully and clearly illustrated my invention in the accompanyingdrawings, to-be taken as a part of this specification, and wherein-Figure 1 is a plan view of a portion of a chase and of a portion of apiece of furniture with the improved quoin arranged in operativeposition, the heel of one of the sections of the quoin being broken awayto show the lockingpiece in operative position to prevent backwardmovement of the sections. Fig. 2 is a longitudinal central sectionthrough the improved quoin. Fig. 3 is a detail perspective view of thelocking-piece. Fig. 4. is a sectional view on the line 4 4t of Fig. 2.

Proceeding with a description of the invention as shown in the drawings,A designates I wedge the form in the chase or to release the sametherefrom.

Each of the quoin-sections abovereferred to is provided on its inclinedface with a central longitudinal rib 3, in which is formed a series oftransverse rack-teeth 4:, the series beginning at approximately the toeof the section and terminating at a point about half-way of the lengthof the rib, the remaining portion of which from the end of the seriesbeing left smooth and slightly higher than the points of the rack-teethfor a purpose to be set forth hereinafter.

In the heel 5 of each wedge-shaped section is formed a slot or chamber6, opening through both the inclined face and the end of the section,and in the floor or bottom of this slot is formed a circular seat ordepression 7, the curved wall 8 of which at the end toward the heelofthe section merges with the bottom of the slot 6 in such a manner asto provide a lug or projection 9, substantially as shown in thedrawings, said lug performing a function to be more fully set forthpresently.

, The chamber or slot 6 is adapted to receive a loosely-disposedlocking-piece 10, which consists of a block of suitable metal formed atone end to provide a circular head or disk 11 and at its opposite endformed with a flaring looking part 12, having oppositely-disposedengaging points or teeth 15, said disk and looking part being connectedby a reduced or neck portion 13. When this locking-piece is arranged inoperative position on one of the quoin-sections, the disk or head 11 isplaced in the circular seat 7, with the locking or engaging part 12projecting through the open end of the slot 6 and beyond the heel end ofthe quoin-section, the said circular seat and similarly-formed head 11providing for a swinging or pivotal movement of the lockingpiece.

The smooth portions of the medial ribs 3 at the parts extending from theserrated or rack portions being slightly higher than the points of theteeth of the latter, as heretofore stated, it will be seen that when thesections are disposed in operative relation they will ride readily andeasily on the said smooth parts of the ribs and that when thequoin-sections are laid together the rib on each section extends intothe slot 6 in the heel of the opposite section, so that the rib on onesection forms with the lug 9 in the slot 6 of the other section acontracted space 14:, in which the neck 13 of the.

locking-piece is loosely lodged. The lug 9 is so located that the spacelet between it and the rib on the opposite section is of less width thanthe diameter of the disk 11, the arrangement being such that the openingthrough which the disk may be removed is sufficiently reduced to preventdislodgment of the disk from the seat 7, whereby the locking-piece issecurely held against removal while the inclined faces of thequoin-sections are maintained in contact. By this construction andarrangement of parts the lockingpiece is readily movable into and out ofposition in the seat of either of the quoin-sections when the latter areseparated, but is securely held in pivotal relation thereto wheneversaid sections are disposed in operative relation to each other.

It will be seen that the flaring or dovetail shape of the locking-piecepresents a locking edge or point for engagement with the rack on theribs 3 no matter in which of the sections it may be placed andirrespective of which edge or point is presented to the rack. Thelocking-piece, it is apparent, may be used with equal convenience in theslot provided for its reception in either of the sections.

To utilize my improved quoin, the disk portion 11 of the locking-pieceis placed in the heel-slot 6, and then the sections of the quoin arelaid together, with their inclined'faces in contact and the quoin placedin position as usual between the frame of the chase and the piece offurniture, and the sectionsare then moved longitudinally to wedge theform in place. When the proper tightness has been attained, thelocking-piece is turned to bring one of the points 15 into engagementwith the rack on the rib 3 of the opposite section, and the sections arethereby held securely against displacement, it being obvious that thetendency of the sections is to jar back on their inclines, so that theengagement of the point of the locking-piece with the rack is tightlyheld and maintained.

What I claim is 1. A printers quoin, comprising wedgeshaped sectionsadapted to engage each other on their inclined faces, a locking-pieceremovably disposed on one of the sections and being adapted to engagethe opposite section to lock the sections against backward movement, andmeans whereby said locking-piece is held against removal while thesections are in operative relation and can be removed only when thesections are separated.

2. A printers quoin, comprising wedgeshaped sections adapted to engageeach other on their inclined faces, a seat in one of said sections, alocking-piece removably and pivotally disposed in said seat and adaptedto engage the opposite section to lock the sections against backwardmovement, and means whereby said locking-piece is held against removalwhile the sections are in operative relation and can be removed onlywhen the parts are separated.

3. A printers quoin, comprising wedgeshaped sections adapted to engageeach other on their inclined faces, a circular seat in one of saidsections, a locking-piece having a circular head removably and pivotallydisposed in said seat and also having means to engage the oppositesection to lock the sections against backward movement, and meanswhereby said locking-piece is held against removal while the sectionsare in operative relation and can be removed only when the sectionsareseparated.

4. A printers quoin, comprising wedgeshaped sections adapted to engageeach other on their inclined faces, a slot in one of said sectionshaving a circular seat in its bottom portion, a locking-piece movable insaid slot and provided with a head pivotally and re-- IIO on theirinclined faces, one of said sections being formed with a rack and theopposite section having a slot in its heel portion and a circular seatin the wall of said slot, a lock-ingpiece movable in said slot andprovidedwith a head pivotally and removablv disposed in said seat, saidlocking-piece being also provided with a tooth or point to engage therack on the opposite section to lock the sections against backwardmovement, and means whereby said locking-piece is held against removalwhile the sections are in operative relation and can be removed onlywhen the sections are separated.

6. A printers quoin, comprising Wedgeshaped sections adapted to engageeach other on their inclined faces, one of said sections being formedwith a rack and the opposite section being provided with a slot in itsheel portion having a circular seat in its bottom wall and a projectionat one end of said seat, a locking-piece movable in said slot andprovided with a head pivotally and remov-ably disposed in said seat,said locking-piece being also provided with a tooth or point to engagethe rack on the opposite section to lock the sections from backwardmovement, and means coacting with said projection to maintain the headof the locking-piece in its seat and against removal while thequoin-sections are in operative relation.

7 A printers quoin, comprising Wedgeshaped sections adapted to engageeach other on their inclined faces, one of said sections being formedwith a rack, and the opposite section being provided with a slot in itsheel portion having a circular seat in its bottom wall and a projectionat one end of said seat, a locking-piece movable in said slot and beingprovided with a head pivotally and reniovably disposed in said seat andbeing also provided with an engaging part to engage the rack onthe'opposite section, the said head and engaging part of thelocking-piece being connected by a neck portion which lodges on saidprojection in the slot of the quoin-section, and means carried by theopposite quoinsection coacting with said projection to prevent removalof the head from its seat when the sections are in operative relation.

Signed at Orange, in the county of Franklin and State of Massachusetts,this 20th day of March, A. D. 1905.

LEWIS L. ROGERS.

Witnesses:

WILLIAM L. WAIT, W ILFRED C. GILMORE.

